golang读取主机条目或只是将其读取为文件

Question

I need to read an entry from the host file on Linux.

I have looked at "net"

fmt.Println("net host file entry:")
fmt.Println(net.LookupIP("AAA"))
fmt.Println(net.LookupAddr("BBB"))
fmt.Println(net.LookupHost("CCC"))

net.LookupIP("AAA") gives me: no such host.

Though I can see the entry if I do getent hosts from the terminal.

I just need to read the ip address?

Note: I am running this within a docker container and the etc/hosts file do contain the entry - I can read it from a shell script but not from go. In docker you can link containers and this will give you an entry in the hosts file.

Or should I just read it in as a file?

Answer 1

If you want to just read the file...

import ( "fmt" "io/ioutil" )

and then

dat, err := ioutil.ReadFile("/windows/system32/drivers/etc/hosts")
fmt.Print(string(dat))

you can parse the result of course